3-dimensional response and 2-dimensional contour plots for hydrogen yield. (a) Xylose vs initial pH. (b) Xylose vs peptone. (c) Initial pH vs peptone. (Hydrogen yield is in mol H2/mol xylose.)
Flowchart of ANN model.
Schematic representation of topology of ANN model.
Hydrogen yield correlation predicted by RSM and ANN with the experimental values.
Plots for optimal topology of neural network. (a) Root mean square error plot for optimal network topology; (b) R2 plot for optimal network topology.
Levels of variables and statistical analysis for Plackett-Burman design.
Experiments for path of the steepest ascent.
Central composite design for three independent variables.
ANOVA results of the experimental response at different factor levels.
Optimized medium composition for hydrogen yield using different methodologies.
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